The rich heritage of Buck Chuck continues to remain the industry standard for quality. For over 75 years Buck Chuck has engineered and built the finest work holding products to be found in the US. Buck Chuck set the industry standard with its patented Ajust Tru system, a feature copied by many but perfected by none Buck Chuck has continued to improve its product offering over the years with the introduction of the ATSC chuck line. This steel bodied scroll chuck has set a new industry benchmark for quality. Both the original AT and the newer ATSC are made to strict ISO and CE standards and have the Buck Chuck trademarked Ajust Tru feature which allows dead true precision and guaranteed repeatability.